Adopt the generalized maximum likelihood radio test based on the Neyman-Pearson algorithm, to study two unresolved Rayleigh targets. And deduced the detection statistic which is chi-square random variable, which only need to know the conditional probability density functions of echo's measured amplitude, in-phase and quadrature of monopulse radio, but the signal-to-noise radio and the direction-off-arrival of any signal are unnecessary.

采用基于涅曼-皮爾遜準(zhǔn)則的廣義似然比檢測，對不可分辨的兩個瑞利目標(biāo)進行了研究欧美中文字幕综合第一页，推出了服從χ2分布的檢驗統(tǒng)計量在线免费播放麻豆，此方法只需要知道目標(biāo)回波信號測量幅值的條件概率密度函數(shù)性欧美激情视频免费观看、單脈沖和差比值的同相和正交部分偷拍亚州偷拍，而不需要任一目標(biāo)信號的信噪比和DOA的先驗知識欧美zoo交。

Solar radio bursts are usually accompanying with solar flares. The complicated radio spectrum detected in solar radio bursts contained a lot of important information on their source region including physical environment and emission mechanism. Especially, because of their morphologic features of short duration, rapid frequency drift, complicated types and so on, the microwave fine structures could bring out rich important information on the source region such as the complicated configuration of magnetic reconnection, the movement of energetic particle, etc.

太陽射電爆發(fā)通常發(fā)生在太陽耀斑期間，它攜帶著爆發(fā)源區(qū)的物理環(huán)境以及輻射機制等諸多重要信息国产在线走光，尤其是微波爆發(fā)的精細(xì)結(jié)構(gòu)国产欧洲亚洲入口AV，持續(xù)時間短、變化快国产在线观看福利大片、結(jié)構(gòu)復(fù)雜园产一级毛片兔费观看视频在线，可以反映重聯(lián)過程復(fù)雜的磁場結(jié)構(gòu)、高能粒子運動等許多特征日韩欧美A一C在线。

In the traditional GSM network planning, the revised Hata model serves as the prototype, and the coefficient in the model formula is tuned according to the data obtained in the radio propagation feature test specific to local actual radio environment, so as to obtain the propagation model for practical prediction. A common digital map only contains the clutter information and the digital terrain model information. So the building designers cannot fully allow for the influence of radio propagation, and can only estimate the influence on the building roughly from a traditional perspective, e.g., consider the influence of different clutters through certain clutter offset.

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The first successful radio range-finding experiment occurred in 1924, when the British physicist Sir Edward Victor Appleton used radio echoes to determine the height of the ionosphere, an ionized layer of the upper atmosphere that reflects longer radio waves.

首次成功的無線電范圍內(nèi)調(diào)查試驗發(fā)生在1924年久久精品国产AV网站，當(dāng)英國物理學(xué)家尤德爵士維克多阿普爾頓使用的無線電回波自拍偷国产2020三级片，以確定高度，電離層美女爽爽爽快快AAA，電離層的上層大氣人人操人人差人人操，反映了較長的無線電波。

The key problems of software radio and direct sequence spread spectrum range used in high range radio fuze are discussed. The effects of doppler frequency and carrier's initial random phase are analyzed. A new direct sequence spread spectrum algorithm based on software radio is proposed, by using differential encoding and quadrature demodulating, the effects of doppler frequency and carrier's initial phase on the output of inference filter are eliminated successfully.

研究了軟件無線電和直接擴頻測距技術(shù)在大炸高無線電引信應(yīng)用中的關(guān)鍵技術(shù)問題伊甸2021，分析了由于多普勒效應(yīng)引起的載波頻偏以及載波隨機相位對測距的影響黄页在线观看高，提出了一種基于軟件無線電的直接序列擴頻解調(diào)算法，通過采用差分編碼和正交解調(diào)的方法天天日天天干天天日天天，消除了多普勒頻偏和載波隨機相位對測距的影響欧美一级A片啪啪啪。

Later, he competed in a spelling competition that was broadcast on radio. The radio announcer told Willis that he should work in radio.

后來，他參加了一次聽廣播拼寫比賽jiujiuren，這家廣播電臺的主持人對威利斯說网址av，他應(yīng)該到廣播電臺工作。

Radio spectrometer is important method and main instrument of radio astronomy research, through which we can research radio astronomy phenomenon in wide frequency spectrum and continuous time with high frequency resolution and high temporal resolution.

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It launched on shore more than two omnidirectional radio beacon stations or radio stations to wave direction , to determine the ship's position can also be used to determine the objective of launching radio waves ...

它以岸上兩個以上全方向發(fā)射的無線電指向標(biāo)臺或無線廣播電臺的來波方向全免费一级毛片免费看在线，來決定船位人妻少妇看A片偷精品视频，也可用于測定發(fā)射無線電波的目標(biāo)所在。另类稀缺呦系列。上海黄色录像免费一级。

For navigation of ships and aircraft the radio range, radio compass, and radio time signals are widely used.

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VHF and HF radio are fitted, together with a radio compass and radio altimeter.

甚高頻和高頻無線電都裝上了無線電羅盤和無線電高度表一起。